Seam foe metal tbouohs oe tanks



(No Model.)

H N HILL SEAM FOR METAL TROUGHS OR TANKS.

Patented Sept. 4, 1894.-

WITNESSES IWVEWTO? I miorneys.

UNITED STATES PATENT OFFICE.

HARVEY -N. HILL, OF PONTIAC, MICHIGAN, ASSIGNOR OF ONEHALF T MARTIN W.BLOOMBURG, OF SAME PLACE.

SEAM FO'R METAL TROUGHS OR TAN KS.

SPECIFICATION forming part of Letters Patent No. 525,459, datedSeptember 4, 1894.

Application filed April 18, 1894.

To all whom it may concern.-

Be it known that I, HARVEY N. HILL, a citizen of the United States,residing at Pontiac, county of Oakland, State of Michigan, have inventeda certain new and useful Improvement in Seams for Metal Troughs orTanks; and I declare the following to be a full, clear, and exactdescription of the invention, such as will enable others skilled in theart to which it pertains to make and use the same, reference being hadto the accompanying drawings, which form a part of this specifica--tion.

This invention relates to water tanks and other similar structures madefrom sheets or strips of thin metal and used for either holding orconveying liquid.

The especial object of the invention is to produce a joint or seambetween two strips of metal, such that'it will be impervious to liquidcontained in a tank made from such sheets of metal, or flowing throughor along a pipe or sluice way made from such sheets of metal.

In the drawings, Figure 1 shows in perspective a tank made from twosheets of metal, and having two headsor end pieces, one at either end.Fig. 2 isa cross section showing the manner of joining the edges ormeeting ends of two sheets of metal. Fig. 3 shows a means of drawingtogether the ends of the external compression ring.

A and B indicate two sheets of metal employed to form a tank. The sheetsare rolled into a partially cylindrical form, and the adjacent orjoining ends are lapped the one by the other a short distance; and,between the contiguoussurfaces of the sheets of metal, I preferablyinsert a strip of thin cloth, indicated at T in Fig. 2. This thin pieceof cloth may be soaked in oil, or may be inserted without suchpreparation, or it may be entirely omitted, although I prefer to insertit.

On the interior of the tank, within the inside of the under lapping endof the sheet A, is placed a ring R, and on the outside, over theoverlapping end of the sheet B, is placed a split ring S. The ends ofthe split ring S are provided at the extremities with Serial No,507,723. (No model) means for drawing the ends of the ring together andreducing its circumference. The

means employed for this purpose may be any of the well known means usedfor contract ing the circumference of the hoop, such as a bolt 1)passing through eyes a e in the end of the split ring, or bolt 1), oneend of which engages with the looped end E of the split ring, and theother end of which engages with a cross bar K that is caught under aloop E of the end of the split ring. The external hoop or split ring Sis arranged directly outside and concentric with theinternal ring R, andwhen the ends of the split ring S are drawn forcibly together by meansof the bolt b, the two ends of the plates A and B are drawn forcibly andvery closely into con tact, making a very tight and firm joint withoutthe use of rivets or solder or cement.

- To secure the ends 0 and D in the tank, the ring B may be replaced byan inturned flange T, which forms a part of the head 0; and the sheet ofmetal A or B, as the case may be, is drawn down tightly; and this flangeforms the internal ring, over which the sheet metal is secured, bydrawing together the ends of the encircling hoop or split ring in amanner precisely similar to the manner of drawing the two piecestogether over the internal ring B. This style of joint can be used invery large tanks, such as are employed in connection with wind mills;and it.can also be employed for smaller tanks or troughs, such as areused for the watering of stock. It can also be used in making longsluice ways for conveying water, where the sluice way is nearly leveland can be made with an open' upper surface.

Tanks or troughs of this form can be very readily and very rapidlyconstructed, and at very low cost, as there is no necessity of eitherriveting, cementing, or soldering them.

What I claim is- 1. In a water tank, in combination with an innersupport, an outer contractile band,

overlapping ends of sheet metal interposed between the support and band,a strip ofv packing material interposed between contiguous surfaces ofthe sheet metal forming the r tank, substantially as described.

roo

2. In a.v tank, the combination of an inner supporting member, an outercompression member, overlapping ends of sheet metal interposed betweenthe supporting andbom- 5 pression members, and means for compressing theouter member, substantially as described.

In testimony. whereof I sign this specification in the presence of twowitnesses.

HARVEY N. HILL.

Witnesses:

' ELMER R. WEBSTER,

EMMA WEBSTER.

